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Goodwill and Other Intangible Assets
6 Months Ended
Jun. 30, 2014
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Other Intangible Assets
Goodwill and Other Intangible Assets

The following is a summary of the activity in the goodwill balance for the six months ended June 30, 2014 (in millions):
Goodwill balance at December 31, 2013
$
9,501

Acquisition
101

Foreign currency translation
90

De-consolidation of Euronext and reclassification of goodwill relating to discontinued operations (Note 13)
(1,058
)
Other activity, net
(51
)
Goodwill balance at June 30, 2014
$
8,583


The following is a summary of the activity in the other intangible assets balance for the six months ended June 30, 2014 (in millions):
Other intangible assets balance at December 31, 2013
$
9,404

Acquisition
39

Foreign currency translation
9

De-consolidation of Euronext and reclassification of other intangible assets relating to discontinued operations (Note 13)
(1,472
)
Other activity, net
59

Amortization of other intangible assets
(82
)
Other intangible assets balance at June 30, 2014
$
7,957



 The Company completed the SMX acquisition during the six months ended June 30, 2014 (Note 3). The foreign currency translation adjustments in the tables above result from a portion of the Company’s goodwill and other intangible assets related to the Company’s United Kingdom, European, Singapore and Canadian subsidiaries, some of whose functional currencies are not the U.S. dollar. The other activity, net in the tables above results from adjustments to the fair value of the net tangible and identifiable intangible assets and liabilities relating to the NYSE acquisition, with a corresponding charge to goodwill (Note 3), and to a lesser extent, to certain patent rights purchased by the Company. The Company did not recognize any impairment losses on goodwill or other intangible assets during the six months and three months ended June 30, 2014 and 2013.